Question about GMC Envoy XL

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Speedometer is not always working. Trans in 3rd and drive does not shift when it should trans just spins as if in neutral. Trans ok in Rev,1st and 2nd. Give me an idea of problem.

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Sounds like the linkage is bad.

Posted on Sep 02, 2010

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Posted on Jan 02, 2017

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1 Answer

Occaisionally when first starting out, Trans will not shift out of 1st gear. Place in neutral and rev engine (limited to 3K), then drop into drive and trans works fine. Any ideas?


first idea is to check fluid level and condition--change if brown colour
next idea would be really the first and that is to run the fault codes to find out if there are any faulty sensors/solenoids or servos or TCM

Jun 12, 2015 | Cars & Trucks

1 Answer

TRANSMISSION


Fuse # 20 or 21 gets power through ignition. This fuse controls PRNDL indicator, speedometer, tach, & will cause transmission to not shift gears correctly. Ours took off in 3rd gear when put in Overdrive & only ran in 3rd gear. If we tried to manually shift thru gears (auto trans), it had 1st, 3rd, reverse. No 2nd or over drive. Replaced ignition. Fixed problem. Root problem was Electric motor that engaged 4 wheel low side was bad. Every time we used 4 Low side it threw power surge through ignition & blew ignition out. Good Luck.

Feb 06, 2014 | 1997 Chevrolet K1500

1 Answer

He put it in D or R and it still in Neutral, raving the engine doesn't help. After several tries, and usually like ~5 minute warmup if finally gets in D and then the car drives perfectly fine. It only...


First doublecheck your transmission fluid level. Its the red handled dipstick near the back of the motor. You check trans fluid level WHILE ENGINE IS RUNNING. If that is ok, you might be getting towards the end of that trannys life. My mother had a bonninville, for the last 2 years we had to drop it down to 1st (the 1 on the gear shift) then into drive. This worked for a couple years before it finally blew out. Try going from 1st then into "D" and make sure it shifts, You can always shift it manually from 1st to 2nd to 3rd to drive if needed. Aint gunna hurt anything, just dont go over 3-4 on you tachometer. You dont wanna redline it.

Jan 31, 2011 | 1995 Buick Regal

1 Answer

My GMC has 311632 miles on it. I just changed the 4L60E transmission a few months ago and now it wont shift out of first unless I manually put it in second gear. all the gears from park rev. nuetral works...


The transmission may be in Limp mode. The transmission is on the same fuse as the MAF, O2 sensors and at least one other sensor - if an O2 shorts out, it will blow the fuse and the trans will go into limp-home mode. Be sure the trans has power and the fuse is not blown before doing anything else.

What is "limp-home mode" ? This is a fault mode in which the transmission either loses electrical power or the PCM deactivates all of the electronics. The transmission will default to max line pressure. The driver will have Reverse and 3rd, with manual 2nd available by putting the gearshift in 2 or 1 (doesn't matter). 1st, 4th, and TCC lockup will not be available. It will not hurt the car to drive it like this for short periods, but use manual 2nd to get the car moving, and be aware that the trans will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear.

Trans does not upshift out of first, speedometer reads zero at all times: VSS failure. Easy fix on rear of transmission, but xmember must come out to access VSS.

Car goes into gear but feels very sluggish like the brakes are dragging, but it will roll easily (starts out in 4th gear), you manually shift to 2 to get it moving, once it's moving you put it back in OD and the car shifts 3rd to 4th on its own and locks the converter at the appropriate time: ShiftB solenoid failed: Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.

No 1st or 4th available; trans shifts 2nd to 3rd by itself in D or OD and locks the converter : ShiftA solenoid failed. Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.

Transmission does not shift automatically, only manually. Swap in a known-good PCM, check wiring, check other sensors such as VSS and TPS.

3rd gear starts, can manually shift through all gears. When car has been turned off for a bit, then back on it will run normally.: VSS dropoff w/ Hi-stall converter. The rpms are too high, but VSS is showing no movement. Happens after a tire burning take-off. Doesn't store a code, will not throw a CEL (I've heard that it will store a code if it happens 3 or more times). Cure: Reprogram PCM for VSS dropoff -- PCMforLess knows about it.

Here are just some of the common things you have described with the issues your transmission has. Good luck and keep me posted.

Dec 22, 2009 | 1994 GMC Sierra

1 Answer

Auto trans will shift some times and manual only


It may be just the vehicle speed sensor. Does the speedometer work OK? The vehicle speed sensor tells the computer how to control the shifting and it also sends a signal to the speedometer. Is the trany full of fluid, is it fairly clean? It should be red. Most vehicles, you check the fluid with the engine idling, in park.

Dec 12, 2009 | 1992 Geo Metro

1 Answer

Hello, My 2002 Ford AU Falcon's transmission is playing up. It is as if it 'forgets' to go into gear? When i have it in 1st, 2nd, 3rd or Drive it just seems to rev instead of going into gear. Yesterday...


check fluid level if its ok its probably the shift solenoids in the trans valve body it needs to be seen to as it will burn out the trans if you keep driving it ,common prob

Oct 22, 2009 | Ford Futura Cars & Trucks

2 Answers

The engine rpms rev when shifting


Your trans is slipping, u are going to need to have it checked out at a trans shop, they will test drive it in most cases for free and report what they think is wrong or recommend more diagnostic work if they are unsure..

May 21, 2009 | 1999 Honda CR-V

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